Carbureter.



H. v. J. JOUFPRET & JQM. RBNB.

GARBURBTER.

APPLICATION FILED 0GT.10, 1910.

1,002,700. Patented sepn.5,191`1.

ya Zed ,772, 2672,69,

.To all whom may cmwerfri.l

UNITED 'sTATEs PATENT oEEiCE.

HENRI VICTOR JULES JoUIfInET AND JULES 'M Apnicia RENE, or' PARIS, FRANCE, AssIGNons To soCIETY; GoUDAnIi ET I'IENNEsHsoN, or PARIS, FRANCE.

.CABaUnETEBQ' Be it known that we, 4HENRI. VTG'DQB JULES J CUFFRET and' JULES MAURICE RENE, engineers, citizens of the French Republic, residing at 18 Rue de Bruxelles, Paris, France, haveV invented certain new and useful Improvements in Carbureters, of which.

the following is a speci cation.

This invention relates to improvements 4in carbureters, and it has for its .object to provide a carbureter having a-single spraying nozzle which is so arranged with respect to the aspirator tube that an action issecured which is similarto, and has the advantages of, the action of carbureters having primary and secondary spraying nozzles. 1 Embodinients of the invention are illustrated in the accompanying drawings,

showing one formof 'the invention. Fig. 2 is-a view similar to 1, showing substantially the same form of the invention, combinedwith an adjunctive improvement. Fig. 3 is a view similar to Fig. 1, showing the same form-of the invention, in connection with a further adjunctive improvement, and Fig. 4 is a vertical longitudinal sectional View showinga modiied'form of the invention.-

Referring more particularly to Fig. 1, the

spraying nozzle a', which is suppliedA froml the usual float feed chamber is arranged 1n a chamber b, the essential feature of which is that it is distinct from, and adjacent to, the contracted portion -c of ti:vv aspirator tube d, and is connected with said aspirator tube by a pipe e and also 'a pi e h.- The the spraying. nozzle is under the influence of the vacuum, 'produced by the passage of air through the contracted portion o, a suction influence being transmitted to said spraying nozzle through the pipe `h. The action of the spraying nozzle `under these conditions corresponds to the action of Figure-1 isa diagram in vertical section Bpeciotionot Letters Patent. Patented Sept. 5, 1911. Appimtion inea october 10, iam. serial No. 586.345.

the principal spraying nozzle in carbureters which, have principal and secondary .spraying nozzles. However, when the.` motor rains .at reduced' or low speed, that is to say, with the throttle g. partially closed, the spraying nozzle is under the inliuence of the suction in the part f, the suction influence then transmitted to the nozzle through the passage e. The action Lofthe spraying nozzle under these conditions corresponds-to the action of the secondary nozzle of carbureters of the type referred to.

It is true that -carbureters have already been proposed which have asingle spraying nozzle that is subject to the suction produced in the part of the aspirator tube which is in advance of the throttle, such suction influence being transmitted by a pi e l. or passage, which opens at one endin e said part and at its other end in the ,con-

tracted portion; but in such `constructi:onsl the spraying nozzle is arranged in .thefcontracted portion, and not in a chamber which 1s distinct from vthe said contracted portion,

lthe latter serving asI a main passage for air.

The general regulation of such known carbureters is attended with great diiiiculty,

and must be made with great precision,

-whereas in a carbureter according to the presentinvention, all that is required is to properly determine the cross 'sectional ei;- tent of the passa es h, e, and z'. Another objection to such itis practically impossible to employ -in connection therewith any adjunctive improvement calculated to increase their eiiiciency. A carbureter' according to theppresent invent"n is of such nature that adjunctive improvements tending to promote the general efficiency of the device, may be emownV carbureters is that ployed, as will be apparent from a reference to Figs. 2 and 3.

In Fig. 2 the carbureter is of the same form as 1n Fig. l, but the opening c', instead ol" being uncovered, is tted with a main a'ir admission valve, such as is provided for the secondary spraying nozzle of the carbureter described in the French `Patent No. 402,733. In Fig. 3, the spraying nozzle is arranged below the level of the liquid in the float chamber, as is proposed in the French Patent No. 338,97 9. The object of the proy vision of this arrangement in connection withthe present carbureter, is that thepassages e and h are so related as to form a Disclaimer in Leners Persa Ne, 1,002,700.

trapwhich, without' the use of mechanical means,` prevents the fuel from escaping when the motor is stopped. The same re- 'sult that is secured 1n the arrangement shown in Fig; 3 is also secured in the ai' rangement shown in Fig. 4, wheein a chamber .6', corresponding to the chamber b aforesaid, is dlsposed concentrically in the float chamber, and is providedat its lower end with a nozzle a', corresponding to the nozzle a. Within the chamber b are the pipes h and e', which correspond with the respective pipes la, and e aforesaid. The pipe h surrounds the pipe e', and opens into the contracted part c of the aspirator tube, and the' pipe e opens into the part f of said tube, which is in advance of the throttle valvel g. The orifice i2 corresponds to the orifice i aforesaid, and is formed in the sleeve-like part of the extension in which the pipes le" and e are fitted. In this construction the valve g is mounted for vcrtical sli ng movement on a nipple which forms a: continuation of the pipe a', and its forward movement is effected by the suction in the aspirator tube, and is limitedby the position of the stop g2. Itwill be apparentin this case that the action of the throttle valve g is semi-automatic.

Having fully described our invention, we claim; f

1. In carbureters having'anaspirator tube which is provided with a throttle va'lve,`and with a contracted portion in the lrear of said valve, a fuel supply chamber and a nozzle supplied therefrom, a chamber in which said nozzlefis arranged and which is distinct from the said contracted portion, and pipes connecting the sa'id chamber respectivelv with the contracted portion and with l which the effective areas of p w to 64 of page `1 of said patent. [oficial Gaeeue, May 4, 1920.]

the `part of the aspirator tube which is`1n advance of the throttle valve.

2. In carbureters having an aspirator tube lwhich is provided with a throttle valve and with a `contracted portion in the rear of said val've,'a fuel supply chamber and a nozzle supplied therefrom, .a chamber in which said nozzle is arranged and which is distinct from the said contracted portion, and pipes vconnecting the said chamber respectively with the contracted portion and with the part of the aspirator tube which is in advance of the throttle valve, the said nozzle -being located below the level of the liquid in the fuel supply chamber, and the said pipes being related'to one another and to the chamber in which the nozzle is inclosed in a manner to afford a trafp to prevent the escape of fuel when the en ine is stopped.

v3. In carbureters aving an aspirator tube provided with a throttle valve and with a contracted portion in the rear of said valve, a fuel supply chamber, a nozzle l supplied therefrom, a: chamber in which the said nozlzle is arranged 'and which is located outside of and adjacent to the said tube, and pipes connecting said chamber in which the nozzle is arranged respectively with the said contracted portion and with the pirater tube which is in a vance of the throttle valve.

In testimon whereof we have hereunto set our hands 1n presence of two subscribing witnesses.

HENBl VICTOR JULES JOUFFRE'I. JULES MAURICE BENE.

Witnesses:

H. C. Coxn, HENRY RoLLE'r.

. DISCLAIMER- l,002,7(')0.He1e'I Vctor Jules Jaufret and Jules Maurice Rene, Paris, France. i Y' CAaaUnE'rrzR. ,Patent dated September 5, 1911. A

I 1920, by the owner, George M. H -olley. Hel-@Bi disclaims from said Letters Patent all carbureters except those in Disclaimer led April 21,

art of the asyh and e, andy of 'i when used, are such that the requisite fuel feed when the motor is running at high speed is produced by reason of the'nozzle a being under the influence of the vacuum produced by the passage, of air thrbugh the contracted'portion e of the aspirator tube, as pointed out 4 at lines 43 to 54 of page 1 of, said patent,yand the requisite fuel feed when the motor is running at reduced or low speed is produced by reason of the said nozzle under the influence of the suction in the part j', as'pointed out at lines' 58l Disclaimer in Leners Persa Ne, 1,002,700.

trapwhich, without' the use of mechanical means,` prevents the fuel from escaping when the motor is stopped. The same re- 'sult that is secured 1n the arrangement shown in Fig; 3 is also secured in the ai' rangement shown in Fig. 4, wheein a chamber .6', corresponding to the chamber b aforesaid, is dlsposed concentrically in the float chamber, and is providedat its lower end with a nozzle a', corresponding to the nozzle a. Within the chamber b are the pipes h and e', which correspond with the respective pipes la, and e aforesaid. The pipe h surrounds the pipe e', and opens into the contracted part c of the aspirator tube, and the' pipe e opens into the part f of said tube, which is in advance of the throttle valvel g. The orifice i2 corresponds to the orifice i aforesaid, and is formed in the sleeve-like part of the extension in which the pipes le" and e are fitted. In this construction the valve g is mounted for vcrtical sli ng movement on a nipple which forms a: continuation of the pipe a', and its forward movement is effected by the suction in the aspirator tube, and is limitedby the position of the stop g2. Itwill be apparentin this case that the action of the throttle valve g is semi-automatic.

Having fully described our invention, we claim; f

1. In carbureters having'anaspirator tube which is provided with a throttle va'lve,`and with a contracted portion in the lrear of said valve, a fuel supply chamber and a nozzle supplied therefrom, a chamber in which said nozzlefis arranged and which is distinct from the said contracted portion, and pipes connecting the sa'id chamber respectivelv with the contracted portion and with l which the effective areas of p w to 64 of page `1 of said patent. [oficial Gaeeue, May 4, 1920.]

the `part of the aspirator tube which is`1n advance of the throttle valve.

2. In carbureters having an aspirator tube lwhich is provided with a throttle valve and with a `contracted portion in the rear of said val've,'a fuel supply chamber and a nozzle supplied therefrom, .a chamber in which said nozzle is arranged and which is distinct from the said contracted portion, and pipes vconnecting the said chamber respectively with the contracted portion and with the part of the aspirator tube which is in advance of the throttle valve, the said nozzle -being located below the level of the liquid in the fuel supply chamber, and the said pipes being related'to one another and to the chamber in which the nozzle is inclosed in a manner to afford a trafp to prevent the escape of fuel when the en ine is stopped.

v3. In carbureters aving an aspirator tube provided with a throttle valve and with a contracted portion in the rear of said valve, a fuel supply chamber, a nozzle l supplied therefrom, a: chamber in which the said nozlzle is arranged 'and which is located outside of and adjacent to the said tube, and pipes connecting said chamber in which the nozzle is arranged respectively with the said contracted portion and with the pirater tube which is in a vance of the throttle valve.

In testimon whereof we have hereunto set our hands 1n presence of two subscribing witnesses.

HENBl VICTOR JULES JOUFFRE'I. JULES MAURICE BENE.

Witnesses:

H. C. Coxn, HENRY RoLLE'r.

. DISCLAIMER- l,002,7(')0.He1e'I Vctor Jules Jaufret and Jules Maurice Rene, Paris, France. i Y' CAaaUnE'rrzR. ,Patent dated September 5, 1911. A

I 1920, by the owner, George M. H -olley. Hel-@Bi disclaims from said Letters Patent all carbureters except those in Disclaimer led April 21,

art of the asyh and e, andy of 'i when used, are such that the requisite fuel feed when the motor is running at high speed is produced by reason of the'nozzle a being under the influence of the vacuum produced by the passage, of air thrbugh the contracted'portion e of the aspirator tube, as pointed out 4 at lines 43 to 54 of page 1 of, said patent,yand the requisite fuel feed when the motor is running at reduced or low speed is produced by reason of the said nozzle under the influence of the suction in the part j', as'pointed out at lines' 58l Diselaimer in Letters Patent No. 1,002,700.

DISCLAIMER- 1,002,700.4Henri View Jules Joule-et and Jule@ Maurice Rem, Paris, France. CARBURETER. .Patent dated September 5, 1911. Disclaimer4 filed April 21, 1920, by the owner, George M Holley. Herebjr disclaims from said Letters Patent all carbureters except those in which the effective areas of p h and e, and ofi when used, are euch that the requisite fuel feed when the motor 1s running at high speed is produced by 

